#include <unistd.h>
+#include <sys/time.h>
#include "syscall.h"
unsigned alarm(unsigned seconds)
{
- return syscall1(__NR_alarm, seconds);
+ struct itimerval it = { .it_value.tv_sec = seconds }, old = { 0 };
+ setitimer(ITIMER_REAL, &it, &old);
+ return old.it_value.tv_sec + !!old.it_value.tv_usec;
}